Running my pi with arch.
This strange behaviour is reliably observed:
the first https connection of the day fails.
Then it works.
This is true for a python script running on a timer or pacman updating the database.
error: failed retrieving file 'core.db' from mirror.archlinuxarm.org : Could not resolve host: mirror.archlinuxarm.org
Rerun the same immediately after and it works.
Any idea?